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<td ><a href="../qtdoc/index.html">Qt 5.12</a></td><td ><a href="qtquick-index.html">Qt Quick</a></td><td ><a href="qtquick-qmlmodule.html">QML类型</a></td><td >Matrix4x4 QML 类型</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">Matrix4x4 QML 类型</h1>
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<!-- $$$Matrix4x4-brief -->
<p>提供一种将4x4转换矩阵应用到<a href="qml-qtquick-item.html">Item</a>的方法。 <a href="#details">更多...</a></p>
<!-- @@@Matrix4x4 -->
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<tr><td class="memItemLeft rightAlign topAlign"> 导入语句：</td><td class="memItemRight bottomAlign"> import QtQuick 2.12</td></tr><tr><td class="memItemLeft rightAlign topAlign"> 
	<span lang="zh-cn">引入于：</span></td><td class="memItemRight bottomAlign">  Qt 5.3</td></tr></table></div><ul>
<li><a href="qml-qtquick-matrix4x4-members.html">所有成员的列表，包括继承成员</a></li>
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<h2 id="properties">属性</h2>
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<li class="fn"><b><b><a href="qml-qtquick-matrix4x4.html#matrix-prop">matrix</a></b></b> : QMatrix4x4</li>
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<!-- $$$Matrix4x4-description -->
<a name="details"></a>
<h2 id="details">详细信息</h2>
<p>Matrix4x4 类型提供了一种通过 4x4 矩阵对<a href="file:///E:/_Personal/Qt5.12-Document-Trans-in-Chinese/qtquick/qml-qtquick-item.html">Item</a>应用转换的方法。</p>
<p>它允许仅使用 4x4 矩阵中提供的一种转换来组合旋转、缩放、平移和剪切。</p>
<p>以下示例将矩形旋转 45 度 (PI/4)：</p>
<pre class="qml">

  <span class="type"><a href="qml-qtquick-rectangle.html">Rectangle</a></span> {
      <span class="name">width</span>: <span class="number">100</span>
      <span class="name">height</span>: <span class="number">100</span>
      <span class="name">color</span>: <span class="string">&quot;red&quot;</span>

      <span class="name">transform</span>: <span class="name">Matrix4x4</span> {
          property <span class="type"><a href="../qtqml/qml-real.html">real</a></span> <span class="name">a</span>: <span class="name">Math</span>.<span class="name">PI</span> <span class="operator">/</span> <span class="number">4</span>
          <span class="name">matrix</span>: <span class="name">Qt</span>.<span class="name">matrix4x4</span>(<span class="name">Math</span>.<span class="name">cos</span>(<span class="name">a</span>), -<span class="name">Math</span>.<span class="name">sin</span>(<span class="name">a</span>), <span class="number">0</span>, <span class="number">0</span>,
                               <span class="name">Math</span>.<span class="name">sin</span>(<span class="name">a</span>),  <span class="name">Math</span>.<span class="name">cos</span>(<span class="name">a</span>), <span class="number">0</span>, <span class="number">0</span>,
                               <span class="number">0</span>,           <span class="number">0</span>,            <span class="number">1</span>, <span class="number">0</span>,
                               <span class="number">0</span>,           <span class="number">0</span>,            <span class="number">0</span>, <span class="number">1</span>)
      }
  }

</pre>
<!-- @@@Matrix4x4 -->
<h2>属性文档</h2>
<!-- $$$matrix -->
<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="matrix-prop">
<td class="tblQmlPropNode"><p>
<a name="matrix-prop"></a><span class="name">matrix</span> : <span class="type">QMatrix4x4</span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>将用于<a href="file:///E:/_Personal/Qt5.12-Document-Trans-in-Chinese/qtquick/qml-qtquick-item.html"><span lang="zh-cn">Item(项）</span></a>转换的 4x4 矩阵</p>
</div></div><!-- @@@matrix -->
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